This breviary from the second half of the 15th century, written by the Dominican nuns Cordula von Schönau and Verena Gnepser of the cloister of St. Katharina in St. Gall, contains a calendar as well as the summer portion of the Proprium de tempore (Easter Sunday through the 25th Sunday after the octave of Pentecost), the In dedicatione ecclesiae, the Collectae de sanctis et de communi sanctorum (Tiburtius and Valerian through Dominicus), the Officium commune sanctorum as well as two psalters and a hymnal. In the calendar, which opens the paper manuscript, are some entries in the hand of Verena Gnepser containing the names of relatives. This indicates personal use of this breviary by Verena Gnepser. (fas)